FURVERT!

4_toes anal anal_penetration animal_genitalia animal_penis anthro bernese_mountain_dog black_body black_fur black_nose bodily_fluids brick brick_wall brown_body brown_fur canid canine canine_genitalia canine_penis canis countershade_torso countershading cross cross_necklace cum domestic_dog duo ejaculation feet fur genital_fluids genitals jewelry knot lucas_(lucasreturns)male male/male male_penetrated male_penetrating male_penetrating_male mammal markings molosser mountain_dog necklace nipples pawpads penetration penis raised_tail sex solar_shephard spots spotted_body spotted_fur swiss_mountain_dog tail toes wall_(structure)white_body white_fur window